Alkaline Earth Metals

The video tutorial covers alkaline earth metals, which include beryllium, magnesium, calcium, strontium, barium, and radium. It discusses their properties, such as electronic configuration, atomic and ionic radii, ionization and hydration enthalpies, and physical and chemical characteristics. The tutorial also highlights their reactivity, compound formation, and uses in various industries. Additionally, it explains the biological importance of calcium and magnesium in human health.

Which element in group 2 of the periodic table is radioactive?

• Calcium

• Radium

• Magnesium

• Beryllium

What is the general electronic configuration of alkaline Earth metals?

• ns2

• np1

• ns1

• np2

Why do alkaline Earth metals have higher first ionization enthalpies compared to alkali metals?

• Larger atomic size

• Smaller atomic size and higher nuclear charge

• Lower nuclear charge

• Greater number of electrons

Which alkaline Earth metal has an anomalously low melting point?

• Strontium

• Calcium

• Magnesium

• Beryllium

What color does calcium impart to the flame in a flame test?

• Crimson

• Apple green

• Blue

• Brick red

What type of compounds do alkaline Earth metals form when reacting with halogens?

• MX

• MX2

• MX3

• MX4

Which alkaline Earth metal is used in aerospace applications?

• Strontium

• Beryllium

• Calcium

• Magnesium

What is the daily requirement of calcium for an adult human?

• 100 mg

• 350 mg

• 1200 mg

• 500 mg

Which pigment in plants contains magnesium?

• Carotene

• Xanthophyll

• Chlorophyll

• Anthocyanin

What role does magnesium play in the human body?

• Regulates blood sugar levels

• Main component of hemoglobin

• Cofactor for enzymes utilizing ATP

• Building material for bones